| A | B |
| macabre | having death as a subject; dwelling on the gruesome |
| macrocosm | the whole universe |
| malaise | a feeling of unease or depression |
| malapropism | the accidental, often comical, use of a word which resembles the one intended |
| malediction | a curse, a wish of evil on another |
| malevolent | exhibiting ill will; wishing harm to others |
| malfeasance | wrongdoing or misconduct, especially by a public official |
| malleable | easily influenced or shaped |
| mannered | artificial or stilted in character |
| maverick | an independent individual who does not go along with the group |
| mawkish | sickeningly sentimental |
| megalomania | obsession with great or grandiose performance |
| mellifulous | having a smooth, rich flow |
| microcosm | a small scale representation of a larger system |
| milieu | the setting or social setting in which something occurs or develops |
| misanthrop | a person who hates or distrusts mankind |
| misnomer | an error in naming a person or place |
| missive | a written note or letter |
| mitigate | to make less severe, make milder |
| modicum | a small portion |
| mollify | to soothe in temper or disposition |
| mordant | biting and caustic in manner and style |
| mores | fixed customs or manners |
| morose | gloomy, sullen |
| mote | a small particle, speck |
| mutability | being capable of change |
| myopic | lacking foresight, having a narrow view or long-range perspective |